/*
 * Copyright (C) 2010 Graham Allan
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.strath.cis.grallan.findbugs.adaptiveranking.gui.sort;

import static edu.strath.cis.grallan.findbugs.adaptiveranking.gui.sort.BugToSortableValueComparator.transformFor;
import static edu.umd.cs.findbugs.gui2.sort.Sortables.BUGCODE;
import static edu.umd.cs.findbugs.gui2.sort.Sortables.BUG_RANK;
import static edu.umd.cs.findbugs.gui2.sort.Sortables.CATEGORY;
import static edu.umd.cs.findbugs.gui2.sort.Sortables.TYPE;
import static java.util.Collections.reverseOrder;

import java.util.Comparator;

import edu.strath.cis.grallan.findbugs.adaptiveranking.util.StackedComparatorBuilder;
import edu.umd.cs.findbugs.BugInstance;

/**
 * @author Graham Allan (grallan@cis.strath.ac.uk)
 */
public class DefaultSortOrder implements Comparator<BugInstance> {

	private Comparator<BugInstance> theComparator;

	private DefaultSortOrder() {
		super();
		theComparator = new StackedComparatorBuilder<BugInstance>().sortBy(transformFor(CATEGORY)).then(
				transformFor(BUGCODE)).then(transformFor(TYPE)).then(reverseOrder(transformFor(BUG_RANK))).thenTie();
	}

	public int compare(BugInstance o1, BugInstance o2) {
		return theComparator.compare(o1, o2);
	}

	public static final DefaultSortOrder COMPARATOR = new DefaultSortOrder();
}
